5TCzBN


Product Code M2220A1
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5TCzBN is another sky-blue emitter from the cabzolyl benzonitrile (CBN) family that is used in TADF-OLED devices with great performance.

Acting as an encapsulation shell to the luminophore in 5TCzBN, tert-butyl units are believed to reduce the singlet–triplet splitting (ΔEST) of the compounds, which gives rise to a more efficient reverse inter-system crossing (RISC) process by effectively separating the neighbouring molecules.

General Information

CAS number n.a.
Full name 2,3,4,5,6-pentakis(3,6-di-tert-butyl-9H-carbazol-9-yl)benzonitrile
Chemical formula C107H120N6
Molecular weight 1490.13 g/mol
Absorption λmax 420 nm in toluene
Fluorescene λem 480 nm in toluene
HOMO/LUMO HOMO = 5.75 eV, LUMO = 2.74 eV, T1 = 2.60 eV [1]
Classification / Family Carbazole, Phthalonitrile, TADF materials, Blue dopant materials, Sublimed materials

Product Details

Purity Sublimed >99.0% (1H NMR)
Melting point Tg =  325 °C (lit.)
Appearance Yellow powder/crystals

*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the Sublimed Materials for OLED devices page.

Chemical Structure

5tczbn
Chemical Structure of 2,3,4,5,6-pentakis(3,6-di-tert-butyl-9H-carbazol-9-yl)benzonitrile (5TCzBN).

Device Structure(s)

Device structure ITO/HATCN (5 nm)/NPB (30 nm)/TCTA (10 nm)/mCBP:5TCzBN (20 wt%) (30 nm)/DpyPA:Liq (1:1, 30 nm)/LiF (0.5 nm)/Al (150 nm) [2]
Colour Sky blue blue
Max. EQE 21.2%
Max. Power Efficiency 56.1 Im/W


Device structure ITO/HATCN (5 nm)/NPB (40 nm)/TCTA (10 nm)/30 wt% 5TCzBN: DMIC-TRZ (30 nm)/B3PyMPM (40 nm)/LiF (1 nm)/Al (150 nm) [3]
Colour Blue blue
Max. EQE 19.2%
Max. Power Efficiency 33.8 Im/W

 

Device structure ITO/HATCN/NPB (30 nm)/TCTA (10 nm)/5TCzBN: mCBP (30 nm)/DPyPA:Liq (1:1, 30 nm)/Al/LiF (0.5 nm) [4]
Colour Blue blue
Max. EQE 21.3%
Half-life Time 12,873h @ 100cd/m2

*For chemical structure information, please refer to the cited references.

MSDS Documentation

5TCzBN MSDS5TCzBN MSDS sheet

Pricing

Grade Order Code Quantity Price
Sublimed (>99.0% purity) M2220A1 250 mg £315.00
Sublimed (>99.0% purity) M2220A1 500 mg £537.00
Sublimed (>99.0% purity) M2220A1 1 g £857.00


Literature and Reviews

  1. Sterically shielded blue thermally activated delayed fluorescence emitters with improved efficiency and stability, D. Zhang et al., Mater. Horiz., 3, 145-151 (2016); doi: 10.1039/C5MH00258C.
  2. Highly efficient and stable blue thermally activated delayed fluorescence emitters, D. Zhang et al., SPIE (2016); DIO: 10.1117/2.1201611.006797.
  3. Perspective on carbazole-based organic compounds as emitters and hosts in TADF applications, B. Wex et al., J. Mater. Chem. C, 5, 8622 (2017); DOI: 10.1039/c7tc02156a.
  4. Critical role of intermediate electronic states for spin-flip processes in charge-transfer-type organic molecules with multiple donors and acceptors, H. Noda et al., Nat. Mater., 18(10), 1-7 (2019); DOI: 10.1038/s41563-019-0465-6.

To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.